|
|
| |
|
|
Chinese scientists turn copper into gold-2019 China(Guangzhou)Int’l Non-Ferrous Metal（Copper）Exhibition
12/24/2018 有色金属展-Copper exhibition -non-ferrous metals expo |
--------------------------------------------------------------------------------------------------------------- |
|
A team of Chinese researchers have turned cheap copper into a new material “almost identical” to gold, according to a study published in peer-reviewed journal Science Advances on Saturday. The discovery will significantly reduce the use of rare, expensive metals in factories. Professor Sun Jian and colleagues at the Dalian Institute of Chemical Physics, at the Chinese Academy of Sciences in Liaoning, shot a copper target with a jet of hot, electrically charged argon gas. The fast-moving ionised particles blasted copper atoms off the target. The atoms cooled down and condensed on the surface of a collecting device, producing a thin layer of sand. Each grain of the sand had a diameter of only a few nanometres, or a thousandth of the size of a bacterium.
The researchers put the material in a reaction chamber and used it as a catalyst to turn coal to alcohol, a sophisticated and difficult chemical process that only precious metals can handle efficiently. The copper nano particles achieved catalytic performance extremely similar to that of gold or silver. The results proved that after processing, metal copper can transform from ‘chicken’ to ‘phoenix’
Copper cannot function as well as gold in industrial applications, mainly because there are fewer electrons, subatomic particles with negative charge, buzzing around its nucleus. These electrons are also relatively unstable, so copper tends to react more easily when combining with other chemicals. The method developed by Sun’s team can inject a large amount of energy into copper atoms and made the electrons more dense and stable. The new material can resist high temperatures, oxidisation and erosion. It is like a warrior with golden armour in a battlefield, capable of withstanding any enemy assault
有色金属展-铜材展-2019年广州国际有色金属工业（铜业）展览会
-2019 China(Guangzhou)Int’l Non-Ferrous Metal（Copper）Exhibition
-Non-Ferrous Metal exhibition, 2019
Non-Ferrous Metal exhibition, Non-Ferrous Metal expo, 2019 Non-Ferrous Metal
expo, Copper exhibition, Copper expo, 2019 Copper exhibition, 2019 Copper expo,
China Copper exhibition, China Copper expo
|
|
|
|
|
